Oblicz w pamięci.
a) (-2) x 7 =
14 x (-3) =
(-12) x (-5) =
(-4) x (-25) =
(-1) x 4 x (-5) =
10 x (-1) x 50 =
b) (20) x (-30) =
(-80) x (-400) =
(-3000) x 50 =
20 x (-150) =
(-20) x (-60) x (-50) =
20 x (-100) x (-30) =
Nie jestem za dobra z matmy :D
Dzięki :D
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a)
-14
-42
60
100
20
-500
b)
-600
32000
-150000
-3000
-60000
60000
DO niektorych nie jestem pewny .
a. -14 -42 60 100 -20 500 b. -600 32000 - 150000 - 3000 - 60000 60000